Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Total Stockholders' Equity	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Noncontrolling Interest
Beginning Balance, value at Dec. 31, 2015	$ 331,308	$ 291,634	$ 10,344	$ 216,803	$ (6,902)	$ 71,389	$ 39,674
Beginning Balance (in shares) at Dec. 31, 2015			20,688,154
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	757	800				800	(43)
Other comprehensive income	663	663			663
Restricted stock issuance	0	0	$ 100	(100)
Restricted stock issuance (in shares)			200,240
Stock compensation	4,881	4,881		4,881
Shares withheld for taxes and tax benefit of vested shares	(2,900)	(2,900)	$ (39)	(2,861)
Shares withheld for taxes and tax benefit of vested shares (in shares)			(78,093)
Centennial redemption of withdrawing member interest	0	11,039		11,039			(11,039)
Ending Balance, value at Dec. 31, 2016	334,709	306,117	$ 10,405	229,762	(6,239)	72,189	28,592
Ending Balance (in shares) at Dec. 31, 2016			20,810,301
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(1,821)	(1,797)				(1,797)	(24)
Other comprehensive income	975	975			975
Restricted stock issuance	(1)	(1)	$ 69	(70)
Restricted stock issuance (in shares)			136,777
Stock compensation	4,107	4,107		4,107
Shares withheld for taxes and tax benefit of vested shares	(1,026)	(1,026)	$ (27)	(999)
Shares withheld for taxes and tax benefit of vested shares (in shares)			(52,901)
Rights offering, net	89,867	89,867	$ 2,500	87,367			0
Rights offering, net (in shares)			5,000,596
Ending Balance, value at Dec. 31, 2017	426,810	398,242	$ 12,947	320,167	(5,264)	70,392	28,568
Ending Balance (in shares) at Dec. 31, 2017			25,894,773
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,235	4,255				4,255	(20)
Other comprehensive income	407	407			407
Restricted stock issuance	1	1	$ 63	(62)
Restricted stock issuance (in shares)			124,597
Stock compensation	4,480	4,480		4,480
Shares withheld for taxes and tax benefit of vested shares	(1,095)	(1,095)	$ (24)	(1,071)
Shares withheld for taxes and tax benefit of vested shares (in shares)			(47,290)
Rights offering, net	(166)	(166)		(166)
Centennial redemption of withdrawing member interest	0	13,172		13,172			(13,172)
Ending Balance, value at Dec. 31, 2018	$ 434,672	$ 419,296	$ 12,986	$ 336,520	$ (4,857)	$ 74,647	$ 15,376
Ending Balance (in shares) at Dec. 31, 2018			25,972,080