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Debt and Contingent Obligations - Additional Information (Details) - USD ($)				3 Months Ended		6 Months Ended
	Mar. 31, 2019	May 15, 2018	Sep. 19, 2016	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Debt Instrument [Line Items]
Interest expense - term debt				$ 326,000	$ 234,000	$ 590,000	$ 482,000
Current portion of long-term debt, contingent obligations				0		0		$ 2,950,000
Gain on reduction of contingent obligation				2,850,000	0	2,850,000	0
IM Term Loan
Debt Instrument [Line Items]
Revised stated interest rate			2.236%
Ripka Seller Note
Debt Instrument [Line Items]
Interest expense - term debt				0	10,000	10,000	20,000
Balance of note payable	$ 600,000			0		0		580,000
Note receivable due	900,000
Settlement of contingent obligation through offset to note receivable		$ 100,000
CW Term Loan
Debt Instrument [Line Items]
Current portion of long-term debt, contingent obligations				0		0		2,850,000
Gain on reduction of contingent obligation				2,850,000
Contingent obligation				0		0		2,850,000
Halston Heritage
Debt Instrument [Line Items]
Contingent obligation				900,000		900,000		0
IM Seller Notes
Debt Instrument [Line Items]
Interest expense - term debt				0	$ 8,000	4,000	$ 20,000
Ripka Earn-Out
Debt Instrument [Line Items]
Threshold of royalty income						6,000,000
Earn-out balance after settlement				$ 0		0
Second Amendment \| IM Term Loan
Debt Instrument [Line Items]
Semi-annual principal and interest installment payments			$ 750,000
Principal payment	750,000
Long-term Debt \| Ripka Earn-Out
Debt Instrument [Line Items]
Earn-out balance before settlement	$ 100,000							$ 100,000
C Wonder Earn Out
Debt Instrument [Line Items]
Fixed threshold to be used in computation of earn-out						$ 4,000,000
Maximum royalty multiple				200.00%		200.00%