Acquisitions - Enlighten (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Jan. 14, 2022	Mar. 31, 2022	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Consideration Transferred:
Holdback liability recognized in connection with acquisition			$ 98	$ 0
Assets acquired:
Goodwill		$ 65,722	65,722		$ 45,295
Liabilities assumed:
Revenues			57,452	41,154
Operating income (loss)			(14,260)	$ 7,944
Eyechronic LLC
Consideration Transferred:
Cash consideration	$ 697
Share consideration	28,725
Total consideration	29,422
Settlement of pre-existing accounts payable	200
Holdback liability recognized in connection with acquisition	$ 100
Share consideration (in shares)	5,399,553
Share price (in dollars per share)	$ 5.32
Share consideration, holdback (in shares)	677,847
Assets acquired:
Cash	$ 118
Accounts receivable	835
Other current assets	37
Fixed assets	2,826
Goodwill	20,427
Total assets acquired	30,008
Liabilities assumed:
Other liabilities	(22)
Total liabilities assumed	(586)
Transaction expenses		100	$ 100
Revenues		800
Operating income (loss)		$ (400)
Eyechronic LLC | Software technology
Assets acquired:
Intangibles	1,877
Liabilities assumed:
Accounts payable	(460)
Total net assets acquired	29,422
Eyechronic LLC | Trade name
Assets acquired:
Intangibles	109
Liabilities assumed:
Other current liabilities	(8)
Eyechronic LLC | Customer relationships
Assets acquired:
Intangibles	3,779
Liabilities assumed:
Deferred revenue	$ (96)