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Segment and Enterprise-wide Information (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
segment
Jun. 30, 2017
USD ($)
Segment Reporting Information [Line Items]        
Number of operating segments | segment     2  
Net sales $ 75,498 $ 77,029 $ 190,311 $ 190,281
Reconciliation of consolidated contribution to income (loss) from continuing operations:        
Operating expenses (32,446) (34,529) (80,620) (83,591)
Income tax expense (252) (1,156) (2,775) (5,294)
Income from continuing operations 1,007 2,566 9,147 10,751
Segment Reconciling Items        
Reconciliation of consolidated contribution to income (loss) from continuing operations:        
Other expense, net     23 (487)
Operating Segments        
Segment Reporting Information [Line Items]        
Net sales 75,498 77,029 190,311 190,281
Contribution 5,795 9,451 21,624 27,729
Operating Segments | Direct        
Segment Reporting Information [Line Items]        
Net sales 34,824 39,111 106,025 113,814
Contribution 739 2,519 12,030 17,852
Operating Segments | Retail        
Segment Reporting Information [Line Items]        
Net sales 39,185 37,083 82,178 74,888
Contribution 3,568 6,097 7,489 8,309
Operating Segments | Royalty        
Segment Reporting Information [Line Items]        
Royalty 1,489 835 2,108 1,579
Unallocated royalty income, net 1,488 835 2,105 1,568
Segment Reconciling Items        
Reconciliation of consolidated contribution to income (loss) from continuing operations:        
Operating expenses (4,593) (5,602) (9,725) (11,197)
Other expense, net 57 (127)    
Income tax expense $ (252) $ (1,156) $ (2,775) $ (5,294)