Note 5. INDEBTEDNESS (Detail) (USD $) In Millions, unless otherwise specified	8 Months Ended	12 Months Ended
	May 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Mar. 15, 2013	Feb. 18, 2013
Notes Payable, Noncurrent	$ 1.0	$ 15.3
Line of Credit Facility, Revolving Credit, Description	$20.0
LineofCreditSubLimitforLOC	3.0
LineOfCreditSubLimiteForCapitalExpenditures	2.5
Line of Credit Facility, Amount Outstanding		1.8
LineOfCreditAmountOutstandingCapEx		0.2
CollateralizedMinimum		1.3
CollateralForOutstandingLOC		2.6
Line of Credit Facility, Interest Rate at Period End		4.25%	3.02%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage (in Basis Points)		0.50%
Interest Expense, Borrowings		0.2	0.9
Write off of Deferred Debt Issuance Cost		0.5
Debt Related Commitment Fees and Debt Issuance Costs			0.7
Line of Credit Facility, Maximum Borrowing Capacity				16	20
LineOfCreditFacilityRevisedAgreement				15	16
PBLoanAmountOutstanding
Line of Credit Facility, Amount Outstanding		$ 10.9	$ 14.4