Equity - Restricted Stock Units (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) $ / shares shares
Restricted Stock Units
Vested (in shares)	0
Weighted-Average Grant-Date Fair Value
Granted (in shares)	150,000
Exercisable (in shares)	444
Unrecognized compensation cost
Weighted-average period for recognition of unrecognized compensation cost	2 years 4 months 24 days
Vesting period	3 years
Vested (in shares)	0
Share-based Compensation Award
Unrecognized compensation cost
If less than 80 percent of performance target is reached	0.00%
RSUs
Restricted Stock Units
Vested (in shares)	(513,678)
Unrecognized compensation cost
Weighted-average period for recognition of unrecognized compensation cost	2 years 2 months 12 days
Stock based compensation expense recognized | $	$ 2.0
Total unrecognized compensation | $	$ 3.2
Vested (in shares)	513,678
2004 Stock Incentive Plan | RSUs
Restricted Stock Units
Granted (in shares)	1,063,570
Vested (in shares)	(262,727)
Outstanding at the end of the period (in shares)	800,843
Weighted-Average Grant-Date Fair Value
Granted (in dollars per share) | $ / shares	$ 4.95
Vested (in dollars per share) | $ / shares	5.86
Outstanding at the end of the period (in dollars per share) | $ / shares	$ 4.65
Unrecognized compensation cost
Vested (in shares)	262,727