Debt (Detail)	12 Months Ended		12 Months Ended								0 Months Ended			12 Months Ended		12 Months Ended		0 Months Ended		12 Months Ended									1 Months Ended			12 Months Ended		12 Months Ended
	Dec. 31, 2012 USD ($)	Jun. 30, 2011	Dec. 31, 2012 Subsequent Event [Member] Scenario, Previously Reported [Member] 6% Shareholder Note Due 2013 [Member] USD ($)	Jun. 30, 2013 Subsequent Event [Member] Scenario, Previously Reported [Member] 6% Shareholder Note Due 2013 [Member]	Jun. 30, 2013 Subsequent Event [Member] Scenario, Previously Reported [Member] 8% Shareholder Note Due 2015 [Member]	Jun. 30, 2013 Subsequent Event [Member] 6% Shareholder Note Due 2013 [Member] USD ($)	Jan. 30, 2013 Subsequent Event [Member] 6% Shareholder Note Due 2013 [Member] USD ($)	Jan. 30, 2013 Subsequent Event [Member] 8% Subordinated Convertible Shareholder Notes Due 2016 [Member]	Apr. 11, 2011 Subsequent Event [Member] 8% Subordinated Convertible Shareholder Notes Due 2016 [Member]	Dec. 30, 2010 6% Shareholder Note Due 2013 [Member] USD ($)	Apr. 08, 2011 8% Subordinated Convertible Shareholder Notes Due 2016 [Member] Maximum [Member]	May 06, 2011 8% Subordinated Convertible Shareholder Notes Due 2016 [Member] USD ($)	Apr. 08, 2011 8% Subordinated Convertible Shareholder Notes Due 2016 [Member] USD ($)	Dec. 31, 2012 Maximum [Member] 6% Shareholder Note Due 2013 [Member] USD ($)	Dec. 31, 2012 Maximum [Member] Line of Credit with FGI Amended [Member] USD ($)	Dec. 31, 2012 Minimum [Member] 6% Shareholder Note Due 2013 [Member] USD ($)	Dec. 31, 2012 Minimum [Member] Line of Credit with FGI Amended [Member] USD ($)	Jan. 04, 2011 Applied Utility Systems [Member] Consideration Payable And Settlement Obligation [Member] USD ($)	Oct. 22, 2010 Applied Utility Systems [Member] Consideration Payable And Settlement Obligation [Member] USD ($)	Dec. 31, 2012 Applied Utility Systems [Member] Consideration Payable And Settlement Obligation [Member] USD ($)	Dec. 31, 2009 Applied Utility Systems [Member] Consideration Payable And Settlement Obligation [Member] USD ($)	Dec. 31, 2009 Consideration Payable And Settlement Obligation [Member]	Jun. 30, 2013 6% Shareholder Note Due 2013 [Member] USD ($)	Jan. 30, 2013 6% Shareholder Note Due 2013 [Member] USD ($)	Dec. 31, 2012 6% Shareholder Note Due 2013 [Member]	Mar. 31, 2011 6% Shareholder Note Due 2013 [Member]	Dec. 31, 2012 8% Shareholder Note Due 2015 [Member]	Jul. 27, 2012 8% Shareholder Note Due 2015 [Member] USD ($)	Jul. 27, 2012 8% Subordinated Convertible Shareholder Notes Due 2016 [Member] USD ($)	Feb. 16, 2012 8% Subordinated Convertible Shareholder Notes Due 2016 [Member]	Dec. 31, 2010 Line of Credit with Fifth Third Bank [Member] CAD	Dec. 31, 2012 Line Of Credit With FGI [Member] USD ($)	Feb. 14, 2011 Line Of Credit With FGI [Member] USD ($)	Dec. 31, 2012 Line of Credit with FGI Amended [Member] USD ($)
Debt Instrument, Unamortized Discount	$ 100,000
Line of Credit Facility, Maximum Borrowing Capacity	7,500,000																														6,000,000		7,500,000
Line of Credit Facility Purchase Receivables Selected by Borrower															80.00%
Line of Credit Facility Purchased Receivable Reserved by Borrowee																																		20.00%
Line Of Credit Facility Advance Amount In Percentage Of Purchased Accounts Receivable Value	80.00%
Line of Credit Facility Maximum Borrowing Capacity against Inventory Collateral															2,000,000		1,000,000
Line Of Credit Facility, Maximum Borrowing Capacity Against Inventory Collateral, Percentage Of Purchased Receivables																																		50.00%
Line of Credit Facility, Interest Rate Description																																		2.50%
Line of Credit Facility, Amount Outstanding, Standby Fees Determination Threshold																																		2,400,000
Debt Issuance Cost																																75,000		75,000
Line of Credit Facility Termination Fee Percentage																																		2.00%
Reserve Percent for Accounts																																		40.00%
Pledged Assets Accounts Receivable Pledged As Collateral Gross Value																																		4,400,000
Borrowings, Outstanding Amount Against Pledged Accounts Receivable																																		3,500,000
Borrowings, Outstanding Amount Against Pledged Accounts Receivable																																		2,000,000
Business Acquisition, Contingent Consideration, at Fair Value																					3,000,000
Debt Instrument, Interest Rate, Stated Percentage				6.00%	8.00%			8.00%	8.00%													5.36%		6.00%		6.00%		8.00%
Due To Seller Amount Paid As Consideration																			1,500,000
Due To Seller Additional Amount Paid During The Period																				2,000,000
Due To Seller Amount Paid In Full Settlement																		1,600,000
Other Notes Payable, Current										1,500,000
Debt Instrument Premium Payment			100,000											200,000		100,000
Debt Instrument Payment Premium Converted To Fixed Amount							250,000																	250,000
Debt Instrument First Payable Amount On Conversion Of Debt Premium To Fixed Amount						100,000																	100,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)																									25,000		45,000			5,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)		4.50																							10.40		2.09			3.80
Debt Instrument, Face Amount												$ 3,000,000																$ 3,000,000
Debt Instrument, Convertible, Conversion Price (in Dollars per share)													$ 7.044																$ 4.00
Initial Conversion Price, Percentage of Closing Bid Price													120.00%
Debt Instrument, Convertible, Number of Equity Instruments											369,853																		250,000