Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 196,704	$ 84,668
Accounts receivable, less allowance of $82 in 2020 and $59 in 2019	48,502	38,115
Inventories, net	55,630	49,187
Other current assets	7,842	7,096
Total current assets	308,678	179,066
Long-term deferred tax assets	188	205
Long-term investment, net	2,555	2,510
Property, plant and equipment, net	59,475	56,952
Other assets	1,838	1,994
Total assets	372,734	240,727
Current liabilities:
Accounts payable	15,647	9,005
Accrued compensation and benefits	13,687	10,410
Accrued expenses	2,689	2,690
Sales allowances	867	741
Short-term lease liabilities	1,156	1,520
Income taxes payable	56	57
Short-term deferred revenue and customer prepayments	7,817	5,507
Total current liabilities	41,919	29,930
Long-term deferred revenue	894	1,054
Contingent consideration obligations	307	451
Long-term income taxes payable	571	567
Long-term lease liabilities	2,400	2,855
Total liabilities	46,091	34,857
Commitments and contingencies (Note 11)
Vicor Corporation stockholders' equity:
Additional paid-in capital	320,988	201,251
Retained earnings	144,030	143,098
Accumulated other comprehensive loss	(316)	(383)
Treasury stock at cost: 11,634,806 shares in 2020 and 2019	(138,927)	(138,927)
Total Vicor Corporation stockholders' equity	326,324	205,562
Noncontrolling interest	319	308
Total equity	326,643	205,870
Total liabilities and equity	372,734	240,727
Class B Common Stock [Member]
Vicor Corporation stockholders' equity:
Common Stock	118	118
Total equity	118	118
Common Stock [Member]
Vicor Corporation stockholders' equity:
Common Stock	$ 431	$ 405