Shareholders’ Equity (Details) $ / shares in Units, $ in Thousands			12 Months Ended
	Jun. 30, 2014 $ / shares shares	Feb. 20, 2009 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) Vote $ / shares shares	Dec. 31, 2015 $ / shares shares	Jun. 19, 2014 USD ($)	Feb. 28, 2014	Jan. 31, 2014
Preferred Stock [Abstract]
Preferred stock, liquidation value (in dollars per share) | $ / shares			$ 1,000	$ 1,000
Preferred stock cumulative dividend rate percentage beginning February 2014 (as a percent)							5.00%
Preferred stock, shares outstanding (in shares)			0	18,856
Stock Redeemed or Called During Period, Value | $			$ (29,509)
Warrant To Purchase Class A Common Stock [Member]
Preferred Stock [Abstract]
Number of shares to be purchased by warrant (in shares)		1,104,370
Number of years for warrant issued to treasury			10 years
Warrants, exercise price (in dollars per share) | $ / shares		$ 4.13
Series A Preferred Stock
Preferred Stock [Abstract]
Preferred stock, shares issued (in shares)		30,407
Preferred stock, liquidation value (in dollars per share) | $ / shares		$ 1,000
Preferred stock cumulative dividend rate percentage beginning February 2014 (as a percent)						9.00%
Amount of approved purchase of preferred shares | $			$ 29,500		$ 14,000
Number of preferred stock purchased (in shares)			18,856
Share price (in dollars per share) | $ / shares	$ 1,207.11
Preferred stock, shares outstanding (in shares)			0
Shares allocated for repurchase (in shares)	11,551
Class A - Common stock
Common Stock [Abstract]
Number of vote for class of shares held | Vote			1
Class B - Common stock
Common Stock [Abstract]
Number of shares received after conversion, per share			1.15
Number of vote for class of shares held | Vote			10
Scenario, Adjustment [Member] | Warrant To Purchase Class A Common Stock [Member]
Preferred Stock [Abstract]
Number of shares to be purchased by warrant (in shares)			1,368,040
Warrants, exercise price (in dollars per share) | $ / shares			$ 3.33
Capital Unit Preferred Stock And Warrant
Preferred Stock [Abstract]
Aggregate purchase price | $		$ 30,400