Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 53,186	$ 56,339
Short-term investments	541	463
Accounts receivable, less allowance of $210 in 2014 and $198 in 2013	27,347	27,683
Inventories, net	28,119	29,696
Deferred tax assets	131	131
Other current assets	4,934	4,212
Total current assets	114,258	118,524
Long-term investments, net	5,134	5,188
Property, plant and equipment, net	37,601	40,092
Other assets	1,726	1,836
Total assets	158,719	165,640
Current liabilities:
Accounts payable	9,336	8,677
Accrued compensation and benefits	9,687	8,055
Accrued expenses	4,602	2,841
Accrued severance charges	1,933	49
Income taxes payable	6	15
Deferred revenue	1,732	1,018
Total current liabilities	27,296	20,655
Long-term deferred revenue	703	974
Long-term income taxes payable	801	1,339
Deferred income taxes payable	335	335
Total liabilities	29,135	23,303
Commitments and contingencies (Note 11)
Vicor Corporation stockholders' equity:
Common Stock	392	392
Additional paid-in capital	170,790	169,474
Retained earnings	94,758	108,645
Accumulated other comprehensive loss	(555)	(526)
Treasury stock, at cost	(138,927)	(138,927)
Total Vicor Corporation stockholders' equity	126,576	139,176
Noncontrolling interest	3,008	3,161
Total equity	129,584	142,337
Total liabilities and equity	158,719	165,640
Class B Common Stock [Member]
Vicor Corporation stockholders' equity:
Common Stock	$ 118	$ 118