Summary of Significant Accounting Policies (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Numerator:
Income from continuing operations	$ 2,965	$ 3,903	$ 7,387	$ 9,561
Less: Income allocated to unvested participating securities	51	72	126	176
Income from continuing operations available to common stockholders	2,914	3,831	7,261	9,385
Income from discontinued operations	30,451	1,511	32,501	3,688
Less: Income allocated to unvested participating securities	520	28	556	68
Income from discontinued operations available to common stockholders	29,931	1,483	31,945	3,620
Net income available to common stockholders	$ 32,845	$ 5,314	$ 39,206	$ 13,005
Denominator:
Denominator for basic earnings per share— weighted average shares	5,807	5,755	5,800	5,753
Effect of dilutive securities:
Common stock equivalents	0	9	4	9
Denominator for diluted earnings per share — adjusted weighted-average shares and assumed conversions	5,807	5,764	5,804	5,762
Basic earnings per share:
From continuing operations	$ 0.50	$ 0.66	$ 1.25	$ 1.63
From discontinued operations	5.16	0.26	5.51	0.63
Basic earnings per share	5.66	0.92	6.76	2.26
Diluted Earnings per share:
From continuing operations	0.50	0.66	1.25	1.62
From discontinued operations	5.16	0.26	5.51	0.63
Diluted earnings per share	$ 5.66	$ 0.92	$ 6.76	$ 2.25