Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012
Current assets:
Cash and cash equivalents	$ 17,170	$ 39,726
Accounts receivable, less allowances (September 30, 2012-$1,906 and June 30, 2012-$1,201)	156,844	108,034
Costs and estimated earnings in excess of billings on uncompleted contracts	77,598	68,562
Inventories	3,267	2,482
Deferred income taxes	5,760	6,024
Other current assets	5,560	5,688
Total current assets	266,199	230,516
Property, plant and equipment at cost:
Land and buildings	29,357	28,846
Construction equipment	60,207	59,176
Transportation equipment	26,027	25,865
Office equipment and software	17,391	16,892
Construction in progress	5,984	2,910
Property, plant and equipment at cost, gross	138,966	133,689
Accumulated depreciation	(81,407)	(78,814)
Property, plant and equipment at cost, net	57,559	54,875
Goodwill	28,763	28,675
Other intangible assets	6,392	6,504
Other assets	3,937	2,565
Total assets	362,850	323,135
Current liabilities:
Accounts payable	61,664	48,931
Billings on uncompleted contracts in excess of costs and estimated earnings	45,637	30,293
Accrued wages and benefits	15,281	15,298
Accrued insurance	7,055	6,912
Income taxes payable	3,238	1,115
Acquisition payable	400	400
Other accrued expenses	3,334	3,014
Total current liabilities	136,609	105,963
Deferred income taxes	6,063	6,075
Long term debt	3,355
Total liabilities	146,027	112,038
Commitments and contingencies
Stockholders' equity:
Common stock-$.01 par value; 60,000,000 shares authorized; 27,888,217 shares issued as of September 30, 2012, and June 30, 2012	279	279
Additional paid-in capital	117,297	116,693
Retained earnings	122,103	117,419
Accumulated other comprehensive income	1,238	771
Stockholders' Equity before Treasury Stock, Total	240,917	235,162
Less: Treasury stock, at cost -2,051,764 shares as of September 30, 2012, and 2,141,990 shares as of June 30, 2012	(24,094)	(24,065)
Total stockholders' equity	216,823	211,097
Total liabilities and stockholders' equity	$ 362,850	$ 323,135