Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	May 11, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 0	$ 0	$ 0	$ 0
Interest and penalty payments	0	0	0	0
Current federal tax benefits	0	0	0	0
Current state tax benefits	$ 0	$ 0	$ 0	$ 0
Income Taxes [Line Items]
Ownership percentage, threshold for utilization of net operating losses carryforward	50.00%		50.00%		50.00%
Ownership percentage, period for utilization of net operating losses carryforwards			3 years
Deferred tax assets, operating loss carryforwards, annual limitation	$ 200		$ 200
Federal
Income Taxes [Line Items]
Operating loss carryforwards, subject to expiration	172,900		172,900			$ 176,200
State
Income Taxes [Line Items]
Operating loss carryforwards, subject to expiration	140,200		140,200			$ 143,000
Provant
Income Taxes [Line Items]
Deferred tax assets, operating loss carryforwards, annual limitation	300		300
Provant | Federal
Income Taxes [Line Items]
Operating loss carryforwards	5,800		5,800
Provant | State
Income Taxes [Line Items]
Operating loss carryforwards	$ 2,800		$ 2,800