Stock Based Compensation and Other Benefit Plans - Time-vested Restricted Stock (Details)	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Restricted stock [Member]
Outstanding at beginning of period (in shares) | shares	881,345
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 11.00
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares	262,961
Estimated fair value at date of grant | $ / shares	$ 4.50
Vested (in shares) | shares	(449,342)
Vested (in dollars per share) | $ / shares	$ 10.50
Forfeited (in shares) | shares	(99,429)
Forfeited (in dollars per share) | $ / shares	$ 11.30
Outstanding at the end of period (in shares) | shares	595,535
Outstanding at the end of period (in dollars per share) | $ / shares	$ 8.45
Restricted Stock Units (RSUs) [Member]
Outstanding at beginning of period (in shares) | shares	1,133,543
Outstanding at beginning of period (in dollars per share) | $ / shares	$ 9.11
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares	1,534,994
Estimated fair value at date of grant | $ / shares	$ 4.36
Vested (in shares) | shares	(332,043)
Vested (in dollars per share) | $ / shares	$ 9.30
Forfeited (in shares) | shares	(153,465)
Forfeited (in dollars per share) | $ / shares	$ 8.04
Outstanding at the end of period (in shares) | shares	2,183,029
Outstanding at the end of period (in dollars per share) | $ / shares	$ 5.82