Subsequent Events Subsequent Events - Narrative (Details) - USD ($)	Feb. 23, 2018	Feb. 27, 2018	Feb. 26, 2018	Dec. 31, 2017	Dec. 31, 2016
Subsequent Event [Line Items]
Preferred stock, par value (in dollars per share)				$ 0.01	$ 0.01
ABL Credit Facility | Revolving Credit Facility | Subsequent Event
Subsequent Event [Line Items]
Debt instrument, term	5 years
Total commitments	$ 100,000,000.0
Amount available for letters of credit	$ 10,000,000
Minimum | ABL Credit Facility | Subsequent Event
Subsequent Event [Line Items]
Commitment fee percentage	0.25%
Minimum | CB Floating Rate | ABL Credit Facility | Subsequent Event
Subsequent Event [Line Items]
Basis spread on variable rate	1.00%
Minimum | Eurodollar | ABL Credit Facility | Subsequent Event
Subsequent Event [Line Items]
Basis spread on variable rate	2.00%
Maximum | ABL Credit Facility | Subsequent Event
Subsequent Event [Line Items]
Commitment fee percentage	0.375%
Maximum | CB Floating Rate | ABL Credit Facility | Subsequent Event
Subsequent Event [Line Items]
Basis spread on variable rate	1.50%
Maximum | Eurodollar | ABL Credit Facility | Subsequent Event
Subsequent Event [Line Items]
Basis spread on variable rate	2.50%
Series A Preferred Stock | Subsequent Event
Subsequent Event [Line Items]
Preferred stock, par value (in dollars per share)			$ 0.01
Scenario, Forecast | ABL Credit Facility
Subsequent Event [Line Items]
Available borrowing capacity		$ 71,000,000