Convertible Preferred Stock (Details) - USD ($)	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Equity [Abstract]
Preferred stock, shares outstanding	1,495,000	1,495,000
Series B cumulative convertible perpetual preferred stock interest rate	6.875%
Number of trading days	20 days
Number of consecutive trading days	30 days
Closing price as percentage of conversion price	130.00%
Series B Preferred Stock converted into common stock (in shares)	3.4433
Initial conversion price of common stock (in usd per share)	$ 14.52
Applicable settlement terms	If the Company elects to settle all or any portion of its conversion obligation in cash, the conversion value and the number of shares of the Company’s common stock it will deliver upon conversion (if any) will be based upon a 20 trading day averaging period.
Trading day averaging period for determining conversion value	20 days
Conversion rate numerator for Preferred Stock	$ 50