Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Feb. 29, 2012	May 31, 2011
Current Assets
Cash and cash equivalents	$ 7,931	$ 10,879
Accounts receivable, net	95,257	78,031
Inventories, net	13,173	9,830
Deferred income taxes	1,324	1,278
Prepaid expenses and other current assets	9,354	6,761
Total current assets	127,039	106,779
Property, plant and equipment, net	58,570	49,168
Intangible assets, net	33,559	27,304
Goodwill	80,053	64,146
Other assets	1,511	1,240
Total assets	300,732	248,637
Current Liabilities
Current portion of long-term debt	5,963	7,226
Current portion of capital lease obligations	6,644	5,853
Accounts payable	7,142	6,656
Accrued expenses and other current liabilities	40,332	28,028
Income taxes payable	466	2,825
Total current liabilities	60,547	50,588
Long-term debt, net of current portion	34,645	14,625
Obligations under capital leases, net of current portion	12,847	9,623
Deferred income taxes	2,425	2,863
Other long-term liabilities	5,197	3,452
Total liabilities	115,661	81,151
Commitments and contingencies
Preferred stock, 10,000,000 shares authorized
Equity
Common stock, $0.01 par value, 200,000,000 shares authorized, 27,938,173 and 27,667,122 shares issued and outstanding as of February 29, 2012 and May 31, 2011, respectively	279	277
Additional paid-in capital	185,984	180,594
Retained earnings (accumulated deficit)	204	(14,017)
Accumulated other comprehensive (loss) income	(1,675)	303
Total Mistras Group, Inc. stockholders' equity	184,792	167,157
Noncontrolling interest	279	329
Total equity	185,071	167,486
Total liabilities, preferred stock and equity	$ 300,732	$ 248,637