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Restructuring, Impairment and Other Costs (Details Textual) - USD ($) $ in Millions			6 Months Ended
	Mar. 07, 2019	Mar. 26, 2018	Jun. 30, 2019
Hugo Separation Agreement \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Severance costs			$ 0.3
Term for base salary continuation	12 months
Craig's Separation Agreement \| Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 0.7
Term for base salary continuation			12 months
Restricted Stock
Restructuring Cost and Reserve [Line Items]
Continued vesting of shares of restricted stock (in shares)	1,934
Time-Vested Restricted Stock
Restructuring Cost and Reserve [Line Items]
Accelerated vesting, number (in shares)		5,488
Performance-Vested Restricted Stock
Restructuring Cost and Reserve [Line Items]
Accelerated vesting, number (in shares)		5,488