Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Receivables, allowance for doubtful accounts (in dollars)	$ 2,004		$ 2,752
Debt issuance costs, accumulated amortization (in dollars)	$ 6,796		$ 922
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000	200,000,000
Common stock, shares issued	81,329,210	78,627,483	79,955,786
Common stock, shares outstanding	79,161,817		77,788,393
Treasury stock, shares issued	2,167,393		2,167,393
Series B Preferred Stock
Preferred stock, par value (in dollars per share)	$ 0.01		$ 0.01
Preferred stock, shares authorized	1,000,000		1,000,000
Preferred stock, shares issued	0		0
Preferred stock, shares outstanding	0		0	12,275
Series C Preferred Stock
Preferred stock, par value (in dollars per share)	$ 0.01		$ 0.01
Preferred stock, shares authorized	18,500		18,500
Preferred stock, shares issued	8,624		8,624
Preferred stock, shares outstanding	8,624		8,624