Stock-Based Compensation and Other Employee Benefit Plans (Schedule of Activity, Restricted Shares) (Details) - Common Stock [Member]	6 Months Ended
	Jun. 30, 2016 $ / shares shares
Restricted Shares [Member]
Restricted Shares
Non-vested restricted shares, beginning balance (in shares)	1,630,232	[1]
Granted (in shares)	441,266
Vested (in shares)	(71,970)
Canceled/forfeited (in shares)	(56,100)
Non-vested restricted shares, ending balance (in shares)	1,943,428	[1]
Per Share Weighted Average Grant Date Fair Value
Non-vested restricted shares, per share weighted average grant date fair value, beginning balance (in dollars per share) | $ / shares	$ 22.94
Granted (in dollars per share) | $ / shares	13.21
Vested (in dollars per share) | $ / shares	23.64
Canceled/forfeited (in dollars per share) | $ / shares	22.58
Non-vested restricted shares, per share weighted average grant date fair value, ending balance (in dollars per share) | $ / shares	$ 20.71
Restricted Stock Units [Member]
Restricted Shares
Non-vested restricted shares, beginning balance (in shares)	32,250	[1]
Non-vested restricted shares, ending balance (in shares)	44,750	[1]

[1] Includes 44,750 and 32,250 restricted stock units as of June 30, 2016 and December 31, 2015, respectively.