Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 81,229	$ 70,557
Accounts receivable, less allowance of $65 in 2019 and $224 in 2018	39,987	43,673
Inventories, net	49,688	47,370
Other current assets	5,114	3,460
Total current assets	176,018	165,060
Long-term deferred tax assets, net	241	265
Long-term investments, net	2,576	2,526
Property, plant and equipment, net	56,336	50,432
Other assets	2,739	2,785
Total assets	237,910	221,068
Current liabilities:
Accounts payable	10,329	16,149
Accrued compensation and benefits	9,548	10,657
Accrued expenses	2,335	2,631
Short-term lease liabilities	1,580
Sales allowances	1,076	548
Accrued severance and other charges		234
Income taxes payable	57	710
Short-term deferred revenue	5,843	5,069
Total current liabilities	30,768	35,998
Long-term deferred revenue	1,134	232
Contingent consideration obligations	210	408
Long-term income taxes payable	237	238
Long-term lease liabilities	2,845	102
Total liabilities	35,194	36,978
Commitments and contingencies (Note 12)
Vicor Corporation stockholders' equity:
Additional paid-in capital	199,166	193,457
Retained earnings	141,786	129,000
Accumulated other comprehensive loss	(278)	(394)
Treasury stock, at cost	(138,927)	(138,927)
Total Vicor Corporation stockholders' equity	202,269	183,656
Noncontrolling interest	447	434
Total equity	202,716	184,090
Total liabilities and equity	237,910	221,068
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	$ 404	$ 402