INTERIM CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss):	$ (2,090)	$ 3,908	$ (4,272)	$ 8,015
Available-for-sale securities:
Changes in unrealized gains (losses)	(199)	57	(879)	226
Reclassification adjustments for (gains) losses included in net income	2	2	(2)	40
Net change	(197)	59	(881)	266
Cash flow hedges:
Changes in unrealized gains (losses)	(256)		(280)	182
Reclassification adjustments for (gains) losses included in net income	177	(42)	196	(188)
Net change	(79)	(42)	(84)	(6)
Other comprehensive income (loss) before tax	(276)	17	(965)	260
Income tax expense (benefit) related to components of other comprehensive income (loss)	(47)	6	(134)	41
Other comprehensive income (loss), net of taxes	(229)	11	(831)	219
Comprehensive income (loss)	$ (2,319)	$ 3,919	$ (5,103)	$ 8,234

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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