pre_text: Cash provided by operating activities for the year ended December 31, 2018 as compared to the year ended December 31, 2017: Net cash provided by operating activities increased by $7.5 million to $55.6 million for the year ended December 31, 2018, as compared to $48.1 million for the year ended December 31, 2017. In determining net cash provided by operating activities, net loss is adjusted for the effects of certain non-cash items, which may be analyzed in detail as follows:
table: (in thousands of U.S. dollars) Year Ended December 31, 2018 Year Ended December 31, 2017
table: Net loss $(265,511) $(164,787)
table: Adjustments to reconcile net loss to net cash provided by operating activities:
table: Depreciation and amortization 102,839 104,112
table: Amortization and write-off of deferred financing costs 7,880 6,391
table: Amortization of deferred drydock and special survey costs 13,828 14,727
table: Provision for losses on accounts receivable 575 269
table: Share based compensation 4,556 4,296
table: Gain on bond and debt extinguishment (6,464) (185)
table: Bargain gain upon obtaining control (58,313) —
table: Income tax benefit (1,108) (3,192)
table: Impairment losses 200,657 50,565
table: Gain on sale of assets (894) (1,064)
table: Loss/(equity) in affiliates, net of dividends received 84,317 4,610
table: Net income adjusted for non-cash items $82,362 $15,742
question: Analyse this data from a financial earnings document. What was the change in Impairment losses between 2017 and 2018?