Fair Value (Details) $ in Thousands			1 Months Ended		2 Months Ended	9 Months Ended
	Jun. 05, 2018 USD ($)	May 01, 2017 USD ($) installment	May 31, 2019 USD ($)	May 31, 2018 USD ($)	Jun. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)
Fair Value
Cash paid for contingent consideration liability			$ 1,200	$ 1,100		$ 934	$ 905
Deny Designs
Fair Value
Contingent consideration		$ 2,800
Number of annual installments | installment		3
Maximum contingent consideration		$ 3,600
Cash paid for contingent consideration liability			$ 1,200	$ 1,100
Deny Designs | Fair Value, Inputs, Level 3
Fair Value
Contingent consideration		2,800
Deny Designs | Contingent Consideration, Payable in First Year
Fair Value
Minimum contingent consideration		300
Maximum contingent consideration		1,200
Deny Designs | Contingent Consideration, Payable in Second Year
Fair Value
Minimum contingent consideration		300
Maximum contingent consideration		1,200
Deny Designs | Contingent Consideration, Payable in Third Year
Fair Value
Minimum contingent consideration		300
Maximum contingent consideration		$ 1,200
Well+Good
Fair Value
Business Combination, Consideration Transferred, Cash Holdback	$ 800
Business Combination, Consideration Transferred, Working Capital Adjustment	$ 2,300
Well+Good | Fair Value, Inputs, Level 3
Fair Value
Cash paid for contingent consideration liability					$ 600
Business Combination, Consideration Transferred, Working Capital Adjustment					$ 200