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Commitments and Contingencies (Tables)
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9 Months Ended | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2013
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Dec. 31, 2012
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| Commitments And Contingencies Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Future Minimum Lease Payments Under Noncancelable Operating Leases | At September 30, 2013, future minimum lease payments under noncancelable operating leases having initial or remaining noncancelable lease terms in excess of one year are as follows:
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At December 31, 2012, future minimum lease payments under noncancelable operating leases having initial or remaining noncancelable lease terms in excess of one year are as follows:
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| Future Minimum Lease Payments Under Capital Leases | At December 31, 2012, future minimum lease payments under capitalized lease obligations are as follows:
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