Accounts Receivable Grants from Outside Parties (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
GRANTS FROM OUTSIDE PARTIES: [Abstract]
Grant proceeds received from outside parties			$ 22,700	$ 27,600
Amortization of deferred grants	$ 2,725	$ 2,750	$ 5,524	$ 5,443