Consolidated Statement of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	No Par, Common Stock	Retained Earnings (Accumulated deficit)	Accumulated Other Comprehensive Income (Loss)
Balance (in shares) at Dec. 31, 2015		7,644,492
Balance at beginning of period at Dec. 31, 2015	$ 77,262	$ 80,111	$ (3,031)	$ 182
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(8,437)		(8,437)
Repurchase of common stock (in shares)		(88,650)
Repurchase of common stock	(625)	$ (625)
Restricted stock units expense (in shares)		77,228
Restricted stock units expense	856	$ 856
Other comprehensive income (loss)	(1,262)			(1,262)
Balance (in shares) at Dec. 31, 2016		7,633,070.00
Balance at end of period at Dec. 31, 2016	67,794	$ 80,342	(11,468)	(1,080)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(21,542)		(21,542)
Issuance of common stock in private placement (in shares)		800,000
Issuance of common stock in private placement	5,000	$ 5,000
Common stock issuance costs	(38)	$ (38)
Restricted stock units expense (in shares)		87,258
Restricted stock units expense	895	$ 895
Other comprehensive income (loss)	717			717
Balance (in shares) at Dec. 31, 2017		8,520,328.000
Balance at end of period at Dec. 31, 2017	52,826	$ 86,199	(33,010)	(363)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(9,227)		(9,227)
Repurchase of common stock (in shares)		(137,228)
Repurchase of common stock	(636)	$ (636)
Restricted stock units expense (in shares)		95,102
Restricted stock units expense	970	$ 970
Other comprehensive income (loss)	(1,770)			(1,770)
Balance (in shares) at Dec. 31, 2018		8,478,202.000
Balance at end of period at Dec. 31, 2018	$ 42,163	$ 86,533	$ (41,758)	(2,612)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances after cumulative effects				$ (842)