Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 03, 2019	Dec. 31, 2018	Nov. 30, 2018	Jul. 20, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill	$ 43,569		$ 27,638			$ 12,272
HALO
Business Acquisition [Line Items]
Cash		$ 1,155
Accounts receivable (gross contractual receivables)		2,217
Inventory		2,889
Inventory step-up		494
Prepaids and other current assets		1,327
Property and equipment		627
Amortizable identifiable intangible assets		28,061
Goodwill		15,931
Operating lease right of use assets		649
Other assets		0
Accounts payable		(2,741)
Income tax payable		(382)
Accrued expenses		(181)
Notes payable		(42)
Accrued wages and wage related expenses		(269)
Sales return liability		(2,728)
Taxes payable		(7,071)
Lease liabilities		(1,775)
Other long-term liabilities		0
Total		38,161
Gross contractual receivables		2,217
HALO | Pro Forma
Business Acquisition [Line Items]
Cash		1,151
Accounts receivable (gross contractual receivables)		2,436
Inventory		2,889
Inventory step-up		494
Prepaids and other current assets		1,310
Property and equipment		627
Amortizable identifiable intangible assets		27,554
Goodwill		15,922
Operating lease right of use assets		0
Other assets		546
Accounts payable		(2,867)
Income tax payable		(501)
Accrued expenses		(217)
Notes payable		0
Accrued wages and wage related expenses		(324)
Sales return liability		(2,728)
Taxes payable		(6,177)
Lease liabilities		0
Other long-term liabilities		(1,611)
Total		38,504
HALO | Scenario, Adjustment
Business Acquisition [Line Items]
Cash		4
Accounts receivable (gross contractual receivables)		(219)
Inventory		0
Inventory step-up		0
Prepaids and other current assets		17
Property and equipment		0
Amortizable identifiable intangible assets		507
Goodwill		9
Operating lease right of use assets		649
Other assets		(546)
Accounts payable		126
Income tax payable		119
Accrued expenses		36
Notes payable		(42)
Accrued wages and wage related expenses		55
Sales return liability		0
Taxes payable		(894)
Lease liabilities		(1,775)
Other long-term liabilities		1,611
Total		$ (343)
Gear4
Business Acquisition [Line Items]
Cash				$ 2,124
Accounts receivable (gross contractual receivables)				104
Inventory				2,831
Inventory step-up				96
Prepaids and other current assets				671
Property and equipment				1,427
Amortizable identifiable intangible assets				23,024
Goodwill				15,068
Accounts payable				(2,584)
Sales return liability				(932)
Taxes payable				(1,226)
Accrued liabilities				(773)
Total				39,830
Gross contractual receivables				$ 203
BRAVEN
Business Acquisition [Line Items]
Accounts receivable (gross contractual receivables)					$ 650
Inventory					2,141
Inventory step-up					179
Property and equipment					368
Amortizable identifiable intangible assets					1,774
Goodwill					298
Accounts payable					(959)
Total					4,451
Gross contractual receivables					$ 650