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Asset Acquisition - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Sep. 30, 2012	Jan. 17, 2012 Trayal Korporacija [Member]
Business Acquisition [Line Items]
Acquisition of assets of Trayal Korporacija			$ 18,500
Grant received from the government of Serbia	10,600
Amount to be invested for grant entitlement	63,700
Number of years over which investment & employment level is to be maintained	3 years
Restricted cash and cash equivalents		$ 6,812

The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

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