Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Total Stockholders' Equity	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Noncontrolling Interest
Beginning Balance (in shares) at Dec. 31, 2012			20,085,865
Beginning Balance, value at Dec. 31, 2012	$ 308,259	$ 268,592	$ 10,043	$ 198,117	$ (5,118)	$ 65,550	$ 39,667
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,103	4,165				4,165	(62)
Other comprehensive income	1,785	1,785			1,785
Exercise of stock options and related tax benefit of $3 (in shares)			7,567
Exercise of stock options and related tax benefit of $3	211	211	$ 4	207
Restricted stock issuance (in shares)			391,555
Restricted stock issuance	0	0	$ 196	(196)
Common stock issued for water purchase (in shares)			251,876
Common stock issued for water purchase	9,370	9,370	$ 126	9,244
Stock compensation	1,223	1,223		1,223
Shares withheld for taxes and tax benefit of vested shares (in shares)			(173,840)
Shares withheld for taxes and tax benefit of vested shares	(4,764)	(4,764)	$ (87)	(4,677)
Warrants exercised	0			6,930		(6,930)
Ending Balance (in shares) at Dec. 31, 2013			20,563,023
Ending Balance, value at Dec. 31, 2013	320,187	280,582	$ 10,282	210,848	(3,333)	62,785	39,605
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	5,762	5,655				5,655	107
Other comprehensive income	(3,555)	(3,555)			(3,555)
Restricted stock issuance (in shares)			94,014
Restricted stock issuance	0	0	$ 47	(47)
Stock compensation	2,564	2,564		2,564
Shares withheld for taxes and tax benefit of vested shares (in shares)			(20,559)
Shares withheld for taxes and tax benefit of vested shares	(625)	(625)	$ (11)	(603)	(11)
Warrants exercised	0			1		(1)
Ending Balance (in shares) at Dec. 31, 2014			20,636,478
Ending Balance, value at Dec. 31, 2014	324,333	284,621	$ 10,318	212,763	(6,899)	68,439	39,712
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,912	2,950				2,950	(38)
Other comprehensive income	(3)	(3)			(3)
Restricted stock issuance (in shares)			85,584
Restricted stock issuance	0	0	$ 43	(43)
Stock compensation	3,922	3,922		3,922
Shares withheld for taxes and tax benefit of vested shares (in shares)			(33,908)
Shares withheld for taxes and tax benefit of vested shares	(921)	(921)	$ (17)	(904)
Modified share-based awards	1,065	1,065		1,065
Ending Balance (in shares) at Dec. 31, 2015			20,688,154
Ending Balance, value at Dec. 31, 2015	$ 331,308	$ 291,634	$ 10,344	$ 216,803	$ (6,902)	$ 71,389	$ 39,674