Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Common Shares	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Shares	Non-Controlling Interest	Common Stock Outstanding
Balance at Beginning of Period at Dec. 31, 2019	$ 182,140	$ 1,148	$ 51,872	$ 160,539	$ (6,330)	$ (29,364)	$ 4,275
Balance at Beginning of Period at Dec. 31, 2019		44,796,252				(330,690)		44,465,562
Stock-based compensation	13,395		9,029			$ 4,366
Stock-based compensation (shares)						59,205		59,205
Repurchase of common shares	(1,436)					$ (1,436)
Repurchase of common shares (shares)						47,500		47,500
Dividends paid	(11,556)			(11,556)
Non-controlling interest dividends	(355)						(355)
Interest rate swaps, net of income taxes	(2,028)				(2,028)
Net income (loss)	(114,013)			(114,137)			124
Balance at End of Period at Jun. 30, 2020	$ 66,147	$ 1,148	60,901	34,846	(8,358)	$ (26,434)	4,044
Balance at End of Period at Jun. 30, 2020		44,796,252				(318,985)		44,477,267
Cash Dividends per Share	$ 0.26
Balance at Beginning of Period at Mar. 31, 2020	$ 70,074	$ 1,148	60,982	41,007	(8,239)	$ (29,182)	4,358
Balance at Beginning of Period at Mar. 31, 2020		44,796,252				(352,075)		44,444,177
Stock-based compensation	2,865		(81)			$ 2,946
Stock-based compensation (shares)						46,849		46,849
Repurchase of common shares	(198)					$ (198)
Repurchase of common shares (shares)						13,759		13,759
Dividends paid	(445)			(445)
Non-controlling interest dividends	(355)						(355)
Interest rate swaps, net of income taxes	(119)				(119)
Net income (loss)	(5,675)			(5,716)			41
Balance at End of Period at Jun. 30, 2020	$ 66,147	$ 1,148	60,901	34,846	(8,358)	$ (26,434)	4,044
Balance at End of Period at Jun. 30, 2020		44,796,252				(318,985)		44,477,267
Cash Dividends per Share	$ 0.01
Balance at Beginning of Period at Dec. 31, 2020	$ 75,573	$ 1,148	41,184	50,456	(7,200)	$ (14,075)	4,060
Balance at Beginning of Period at Dec. 31, 2020		44,796,252				(223,451)		44,572,801
Stock-based compensation	8,086		(2,028)			$ 10,114
Stock-based compensation (shares)						128,580		128,580
Repurchase of common shares	$ (1,031)					$ (1,031)
Repurchase of common shares (shares)	33,863					33,863		33,863
Dividends paid	$ (909)			(909)
New share issuance	59,139	$ 40	59,099
New share issuance (shares)		1,658,012						1,658,012
Interest rate swaps, net of income taxes	(2,938)				(2,938)
Net income (loss)	16,424			16,165			259
Balance at End of Period at Jun. 30, 2021	$ 154,344	$ 1,188	98,255	65,712	(10,138)	$ (4,992)	4,319
Balance at End of Period at Jun. 30, 2021		46,454,264				(128,734)		46,325,530
Cash Dividends per Share	$ 0.02
Balance at Beginning of Period at Mar. 31, 2021	$ 146,046	$ 1,188	103,358	58,115	(7,861)	$ (12,916)	4,162
Balance at Beginning of Period at Mar. 31, 2021		46,454,264				(213,783)		46,240,481
Stock-based compensation	3,681		(5,103)			$ 8,784
Stock-based compensation (shares)						114,131		114,131
Repurchase of common shares	$ (860)					$ (860)
Repurchase of common shares (shares)	29,082					29,082		29,082
Dividends paid	$ (463)			(463)
Interest rate swaps, net of income taxes	(2,277)				(2,277)
Net income (loss)	8,217			8,060			157
Balance at End of Period at Jun. 30, 2021	$ 154,344	$ 1,188	$ 98,255	$ 65,712	$ (10,138)	$ (4,992)	$ 4,319
Balance at End of Period at Jun. 30, 2021		46,454,264				(128,734)		46,325,530
Cash Dividends per Share	$ 0.01