Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Operating activities:
Net income	$ 4,684	$ 3,509
Adjustments to reconcile net income to net cash provided (used) by operating activities:
Depreciation and amortization	2,826	2,826
Deferred income tax	98	(977)
Gain on sale of property, plant and equipment	(33)	(42)
Allowance for uncollectible accounts	705	(33)
Stock-based compensation expense	866	969
Other	8	34
Changes in operating assets and liabilities increasing (decreasing) cash:
Accounts receivable	(49,515)	(965)
Costs and estimated earnings in excess of billings on uncompleted contracts	(9,036)	(10,445)
Inventories	(785)	(79)
Other assets	(1,292)	(1,591)
Accounts payable	12,541	7,474
Billings on uncompleted contracts in excess of costs and estimated earnings	15,344	(9,943)
Accrued expenses	2,591	(2,858)
Net cash used by operating activities	(20,998)	(12,121)
Investing activities:
Acquisition of property, plant and equipment	(5,092)	(2,988)
Proceeds from asset sales	37	166
Net cash used by investing activities	(5,055)	(2,822)
Financing activities:
Issuances of common stock	61	49
Capital lease payments	(22)	(108)
Excess tax benefit of exercised stock options and vesting of deferred shares	30
Advances under credit agreement	7,828
Repayments of advances under credit agreement	(4,473)
Treasury shares purchased by Employee Stock Purchase Plan	8	14
Open market purchase of treasury shares		(4,872)
Other treasury share purchases	(350)	(108)
Net cash provided (used) by financing activities	3,082	(5,025)
Effect of exchange rate changes on cash	415	(704)
Net decrease in cash and cash equivalents	(22,556)	(20,672)
Cash and cash equivalents, beginning of period	39,726	59,357
Cash and cash equivalents, end of period	17,170	38,685
Supplemental disclosure of cash flow information:
Income taxes	776	169
Interest	126	207
Non-cash investing and financing activities:
Purchases of property, plant and equipment on account	$ 649	$ 683