Equity Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015		Sep. 30, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income attributable to shareholders of Class A common stock	$ 1,314	$ 1,061	$ 3,884	[1]	$ 1,061
Basic weighted average Class A common shares outstanding	3,097	3,000	3,053	[1]	3,000
Basic EPS attributable to shareholders (in dollars per share)	$ 0.42	$ 0.35	$ 1.27	[1]	$ 0.35
Net income attributable to shareholders of Class A common stock	$ 1,314	$ 1,061	$ 3,884	[1]	$ 1,061
Effect of conversion of Class B common stock to shares of Class A common stock	3,605		11,734
Effect of conversion of convertible subordinated notes into shares of Class B common stock and shares of Class B common stock into shares of Class A common stock	(520)		(436)
Diluted net income attributable to shareholders of Class A common stock	$ 4,399		$ 15,182
Basic weighted average Class A common shares outstanding	3,097	3,000	3,053	[1]	3,000
Effect of dilutive Class B common stock	10,750		10,750
Effect of dilutive convertible subordinated notes into shares of Class B common stock and shares of Class B common stock into shares of Class A common stock	351		118
Effect of dilutive restricted stock units	34		27
Diluted weighted average shares outstanding	14,232	13,750	13,948	[1]	3,000
Diluted EPS attributable to shareholders (in dollars per share)	$ 0.31	$ 0.03	$ 1.09	[1]	$ 0.35
Common Class A
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Basic weighted average Class A common shares outstanding	3,097		3,053
Basic weighted average Class A common shares outstanding	3,097		3,053

[1] Financial information has been recast to include results attributable to the acquisition of Oasis Power Holdings LLC on May 12, 2015 from an affiliate. See Note 2 “Basis of Presentation” and Note 3 "Acquisitions" for further discussion.