Accounts Receivable Grants from Outside Parties (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
GRANTS FROM OUTSIDE PARTIES: [Abstract]
Grant proceeds received from outside parties			$ 31,500	$ 43,500
Amortization of deferred grants	$ 2,501	$ 2,727	$ 8,025	$ 8,170