pre_text: table of contents contractual obligations the company's significant contractual obligations as of december 31 , 2016 are summarized below: .
post_text: ( 1 ) on september 14 , 2012 , the company entered into a lease agreement for 186000 square feet of rentable space located in an office facility in canonsburg , pennsylvania , which serves as the company's headquarters . the lease was effective as of september 14 , 2012 , but because the leased premises were under construction , the company was not obligated to pay rent until three months following the date that the leased premises were delivered to ansys , which occurred on october 1 , 2014 . the term of the lease is 183 months , beginning on october 1 , 2014 . the company has a one-time right to terminate the lease effective upon the last day of the tenth full year following the date of possession ( december 31 , 2024 ) by providing the landlord with at least 18 months' prior written notice of such termination . ( 2 ) other operating leases primarily include noncancellable lease commitments for the company's other domestic and international offices as well as certain operating equipment . ( 3 ) unconditional purchase obligations primarily include software licenses and long-term purchase contracts for network , communication and office maintenance services , which are unrecorded as of december 31 , 2016 . ( 4 ) the company has $ 18.4 million of unrecognized tax benefits , including estimated interest and penalties , that have been recorded as liabilities in accordance with income tax accounting guidance for which the company is uncertain as to if or when such amounts may be settled . as a result , such amounts are excluded from the table above . ( 5 ) other long-term obligations primarily include third-party commissions of $ 15.0 million , deferred compensation of $ 7.4 million ( including estimated imputed interest of $ 161000 within 1 year and $ 87000 within 2-3 years ) and post- employment benefits , including pension obligations , of $ 6.5 million for certain foreign locations of the company . these amounts include the related current portions when applicable. .
table: Payments Due by Period
table: (in thousands) Total Within 1 year 2 – 3 years 4 – 5 years After 5 years
table: Global headquarters operating lease<sup>(1)</sup> $40,859 $4,278 $8,556 $8,928 $19,097
table: Other operating leases<sup>(2)</sup> 29,808 9,861 12,814 4,752 2,381
table: Unconditional purchase obligations<sup>(3)</sup> 37,415 14,134 20,012 3,269 —
table: Obligations related to uncertain tax positions, including interest and penalties<sup>(4)</sup> 2 2 — — —
table: Other long-term obligations<sup>(5)</sup> 30,846 13,292 11,472 1,763 4,319
table: Total contractual obligations $138,930 $41,567 $52,854 $18,712 $25,797
question: Analyse this data from a financial earnings document. what is the proportion of total global headquarters leases to total other operating leases?