Long-Term Debt and Capital Lease Obligations (Details) (USD $) In Thousands, unless otherwise specified			9 Months Ended						1 Months Ended
	Mar. 29, 2013	Jun. 30, 2012	Mar. 29, 2013 Revolving Credit Facility	Jun. 30, 2012 Revolving Credit Facility	Mar. 29, 2013 Subordinated Debt	Feb. 28, 2011 Subordinated Debt	Mar. 29, 2013 Subordinated Debt Alexander Utility Engineering	Feb. 28, 2011 Subordinated Debt Alexander Utility Engineering installment	Jul. 31, 2012 Subordinated Debt Other note payable Payments	Mar. 31, 2012 Subordinated Debt Other note payable	Mar. 29, 2013 Subordinated Debt Other note payable	Mar. 30, 2012 Subordinated Debt Other note payable Payments	Mar. 29, 2013 Capital Lease Obligations	Mar. 29, 2013 Minimum Revolving Credit Facility	Mar. 29, 2013 Minimum Revolving Credit Facility Prime Rate	Mar. 29, 2013 Minimum Revolving Credit Facility LIBOR	Mar. 29, 2013 Maximum Revolving Credit Facility	Mar. 29, 2013 Maximum Revolving Credit Facility Prime Rate	Mar. 29, 2013 Maximum Revolving Credit Facility LIBOR	Mar. 29, 2013 Furniture And Equipment Capital Lease Obligations	Jun. 30, 2012 Furniture And Equipment Capital Lease Obligations	Mar. 30, 2012 Furniture And Equipment Capital Lease Obligations	Mar. 29, 2013 Assets Held under Capital Leases	Mar. 29, 2013 Variable Interest Entity, Primary Beneficiary Subordinated Debt	Mar. 29, 2013 Variable Interest Entity, Primary Beneficiary Subordinated Debt CAH note payable	Jun. 30, 2010 Variable Interest Entity, Primary Beneficiary Subordinated Debt CAH note payable	Jun. 30, 2007 Variable Interest Entity, Primary Beneficiary Subordinated Debt CAH note payable
Line of Credit Facility [Abstract]
Senior Revolving Credit Facility, Maximum Borrowing Capacity			$ 65,000
Line Of Credit Facility, Amount Of Syndication Reserve			15,000
Margin Percentage Related To Interest On Revolving Credit Facility															2.00%	3.00%		2.75%	3.50%
Average Monthly Backlog Maintained			190,000
Fixed Charge Coverage Ratio														1
Balance Of Borrowing Capacity Plus Qualified Cash That Must Be Maintained Before Fixed Charge Coverage Ratio Covenant Is Applicable, Measured On 30 Average Basis			20,000
Balance Of Borrowing Capacity Plus Qualified Cash That Must Be Maintained Before Fixed Charge Coverage Ratio Covenant Is Applicable During Last Fiscal Quarter			15,000
Earnings Before Interest, Taxes, Deprecation and Amortization Measured Quarterly			12,500
Annual Capital Expenditures, Current Year																	8,500
Letters of Credit, Amount Available For Issue			15,000
Letters of Credit Outstanding, Amount			3,960	4,239
Line of Credit Facility, Current Borrowing Capacity			48,261	49,130
Line of Credit Facility, Remaining Borrowing Capacity			44,301	44,891
Subordinated Long-term Debt, Noncurrent																								1,500	2,448
Long-term Debt						1,500		900	4,259		780	1,293															3,200
Capital Lease Obligations	1,917																			1,161	756	161
Debt, Weighted Average Interest Rate													1.95%
Debt Instrument, Interest Rate, Stated Percentage					3.00%		3.25%																			6.50%	10.00%
Interest Ownership Percentage by Parent																									70.00%
Number Of Installment Payments								2	11			12
Debt Instrument, Annual Principal Payment								450
Debt Instrument, Face Amount												2,195
Length Of Note Payable						1 year		2 years				3 years
Debt Instrument, Frequency of Periodic Payment										quarterly
Debt Instrument, Periodic Payment									391	190
Stated Finance Charge Rate									1.99%			2.74%
Accumulated amortization	$ 41,989	$ 39,621																					$ 318