Net Income (Loss) Attributable to Controlling Interests Per Common Share (Details) $ / shares in Units, $ in Thousands		3 Months Ended
		Mar. 31, 2018 USD ($) shares $ / shares	Mar. 31, 2017 USD ($) $ / shares shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted Average Number of Shares, Restricted Stock		184,196	345,385
Document Fiscal Year Focus		2018
Numerator:
Net (loss) income attributable to controlling interests | $		$ (4,670)	$ 728
Denominator:
Basic (including unvested share-based payment awards) (in shares)	[1]	13,899,000	13,944,000
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	[2]	0	33,000
Weighted Average Number of Shares Outstanding, Diluted	[1]	13,899,000	13,977,000
Net (loss) income attributable to controlling interests per common share-basic (in dollars per share) | $ / shares		$ (0.34)	$ 0.05
Net (loss) income attributable to controlling interests per common share-diluted (in dollars per share) | $ / shares		$ (0.34)	$ 0.05
Five Point Eight Seven Five Percent Convertible Senior Notes Due Two Thousand Thirty Five [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Debt Instrument, Convertible, Number of Equity Instruments		3,600,000
Denominator:
Incremental Common Shares Attributable to Conversion of Debt Securities		0

[1] Shares related to unvested share-based payment awards included in our basic and diluted share counts were 184,196 for the three months ended March 31, 2018, compared to 345,385 for the three months ended March 31, 2017.

[2] The effect of dilutive stock compensation arrangements is shown only for informational purposes where we are in a net loss position. In such situations, the effect of including outstanding options and restricted stock would be anti-dilutive, and they are thus excluded from all loss period calculations.