Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 116,916	$ 119,747
Restricted cash	727	725
Short-term investments	113,159	104,181
Accounts receivable, net	126,881	109,609
Contract assets	17,367	18,293
Inventories	176,491	170,858
Prepaid expenses and other current assets	17,743	25,974
Total current assets	569,284	549,387
Property, plant, and equipment, net	105,031	99,743
Operating lease right-of-use assets	26,405	28,813
Intangible assets, net	28,896	33,905
Goodwill	181,943	181,943
Deferred income taxes	1,639	1,639
Other assets	3,454	3,546
Total assets	916,652	898,976
Current liabilities:
Accounts payable	47,074	44,456
Accrued expenses and other current liabilities	56,918	79,752
Customer deposits and deferred revenue	74,560	63,136
Income taxes payable	1,598	1,860
Current portion of long-term debt	20,120
Total current liabilities	200,270	189,204
Deferred income taxes	4,774	4,792
Long-term debt	254,055	229,438
Long-term operating lease liabilities	31,772	32,834
Other liabilities	5,044	5,080
Total liabilities	495,915	461,348
Stockholders' equity:
Preferred stock, $0.01 par value; 500,000 shares authorized; no shares issued and outstanding.
Common stock, $0.01 par value; 120,000,000 shares authorized; 51,425,233 shares issued and outstanding at June 30, 2022 and 50,652,864 shares issued and outstanding at December 31, 2021	515	507
Additional paid-in capital	1,065,590	1,116,921
Accumulated deficit	(645,757)	(681,283)
Accumulated other comprehensive income	389	1,483
Total stockholders' equity	420,737	437,628
Total liabilities and stockholders' equity	$ 916,652	$ 898,976