Fair Value Measurement (Detail) - (Table) (USD $) | 3 Months Ended | 9 Months Ended | 12 Months Ended | | | |
Sep. 30, 2014 | Jun. 30, 2014 | Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2013 | Aug. 13, 2014 | Mar. 31, 2014 | Jun. 25, 2007 |
Unrealized Gain (Loss) on Securities | ' | ' | $5,000 | ' | $1,387,000 | ' | ' | ' |
Business Acquisition, Contingent Consideration, Actual Cash Payment | 5,160,000 | 3,315,000 | 8,475,000 | 7,420,000 | ' | ' | ' | ' |
Loss Contingency Accrual, Period Increase (Decrease) | ' | ' | 1,378,000 | 0 | ' | ' | ' | ' |
Assets: | ' | ' | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Current | 16,989,000 | ' | 16,989,000 | 19,848,000 | 20,591,000 | ' | ' | ' |
Notes Receivable, Related Parties, Noncurrent | 3,581,000 | ' | 3,581,000 | 3,581,000 | 3,581,000 | ' | ' | 3,000,000 |
Available-for-sale Securities, Noncurrent | 2,573,000 | ' | 2,573,000 | 92,431,000 | 91,267,000 | ' | ' | ' |
Notes, Loans and Financing Receivable, Net, Noncurrent | 2,440,000 | ' | 2,440,000 | 3,085,000 | 3,171,000 | ' | ' | ' |
Contingent payment liability | 17,082,000 | ' | 17,082,000 | 30,377,000 | 24,100,000 | 4,616,000 | ' | ' |
Liabilities: | ' | ' | ' | ' | ' | ' | ' | ' |
Foreign Currency Contract, Asset, Fair Value Disclosure | 194,000 | ' | 194,000 | ' | ' | ' | ' | ' |
Available-for-sale Securities, Gross Unrealized Loss | ' | ' | 101,000 | ' | 4,530,000 | ' | ' | ' |
Increase (Decrease) in Notes Receivables | ' | ' | 640,000 | ' | ' | ' | ' | ' |
Foreign Currency Exchange Rate, Translation | ' | ' | ' | ' | ' | ' | 21,000 | ' |
Fair Value [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Assets: | ' | ' | ' | ' | ' | ' | ' | ' |
Cash Equivalents | 102,277,000 | ' | 102,277,000 | ' | 102,247,000 | ' | ' | ' |
Current marketable securities – available for sale | ' | ' | ' | ' | 20,591,000 | ' | ' | ' |
Long-term marketable securities – available for sale | ' | ' | ' | ' | 91,267,000 | ' | ' | ' |
Total assets | 127,860,000 | ' | 127,860,000 | ' | 220,857,000 | ' | ' | ' |
Contingent payment liability | 29,558,000 | ' | 29,558,000 | ' | 34,795,000 | ' | ' | ' |
Liabilities: | ' | ' | ' | ' | ' | ' | ' | ' |
Total liabilities | 29,752,000 | ' | 29,752,000 | ' | 35,255,000 | ' | ' | ' |
Fair Value [Member] | Note receivable – related party [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Assets: | ' | ' | ' | ' | ' | ' | ' | ' |
Notes Receivable, Fair Value Disclosure | 3,581,000 | ' | 3,581,000 | ' | 3,581,000 | ' | ' | ' |
Fair Value [Member] | Forward contracts [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Liabilities: | ' | ' | ' | ' | ' | ' | ' | ' |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 194,000 | ' | 194,000 | ' | 460,000 | ' | ' | ' |
Fair Value [Member] | Note receivable – Seller of SM Canada [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Assets: | ' | ' | ' | ' | ' | ' | ' | ' |
Notes Receivable, Fair Value Disclosure | ' | ' | ' | ' | 3,171,000 | ' | ' | ' |
Fair Value, Inputs, Level 1 [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Assets: | ' | ' | ' | ' | ' | ' | ' | ' |
Cash Equivalents | 102,277,000 | ' | 102,277,000 | ' | 102,247,000 | ' | ' | ' |
Current marketable securities – available for sale | 16,989,000 | ' | 16,989,000 | ' | 20,591,000 | ' | ' | ' |
Long-term marketable securities – available for sale | 2,573,000 | ' | 2,573,000 | ' | 91,267,000 | ' | ' | ' |
Total assets | 121,839,000 | ' | 121,839,000 | ' | 214,105,000 | ' | ' | ' |
Contingent payment liability | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Liabilities: | ' | ' | ' | ' | ' | ' | ' | ' |
Total liabilities | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Fair Value, Inputs, Level 1 [Member] | Note receivable – related party [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Assets: | ' | ' | ' | ' | ' | ' | ' | ' |
Notes Receivable, Fair Value Disclosure | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Fair Value, Inputs, Level 1 [Member] | Forward contracts [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Liabilities: | ' | ' | ' | ' | ' | ' | ' | ' |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Fair Value, Inputs, Level 1 [Member] | Note receivable – Seller of SM Canada [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Assets: | ' | ' | ' | ' | ' | ' | ' | ' |
Notes Receivable, Fair Value Disclosure | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Fair Value, Inputs, Level 2 [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Assets: | ' | ' | ' | ' | ' | ' | ' | ' |
Cash Equivalents | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Current marketable securities – available for sale | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Long-term marketable securities – available for sale | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Total assets | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Contingent payment liability | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Liabilities: | ' | ' | ' | ' | ' | ' | ' | ' |
Total liabilities | 194,000 | ' | 194,000 | ' | 460,000 | ' | ' | ' |
Fair Value, Inputs, Level 2 [Member] | Note receivable – related party [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Assets: | ' | ' | ' | ' | ' | ' | ' | ' |
Notes Receivable, Fair Value Disclosure | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Fair Value, Inputs, Level 2 [Member] | Forward contracts [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Liabilities: | ' | ' | ' | ' | ' | ' | ' | ' |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 194,000 | ' | 194,000 | ' | 460,000 | ' | ' | ' |
Fair Value, Inputs, Level 2 [Member] | Note receivable – Seller of SM Canada [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Assets: | ' | ' | ' | ' | ' | ' | ' | ' |
Notes Receivable, Fair Value Disclosure | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Fair Value, Inputs, Level 3 [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Assets: | ' | ' | ' | ' | ' | ' | ' | ' |
Cash Equivalents | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Current marketable securities – available for sale | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Long-term marketable securities – available for sale | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Total assets | 6,021,000 | ' | 6,021,000 | ' | 6,752,000 | ' | ' | ' |
Contingent payment liability | 29,558,000 | ' | 29,558,000 | ' | 34,795,000 | ' | ' | ' |
Liabilities: | ' | ' | ' | ' | ' | ' | ' | ' |
Total liabilities | 29,558,000 | ' | 29,558,000 | ' | 34,795,000 | ' | ' | ' |
Fair Value, Inputs, Level 3 [Member] | Note receivable – related party [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Assets: | ' | ' | ' | ' | ' | ' | ' | ' |
Notes Receivable, Fair Value Disclosure | 3,581,000 | ' | 3,581,000 | ' | 3,581,000 | ' | ' | ' |
Fair Value, Inputs, Level 3 [Member] | Forward contracts [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Liabilities: | ' | ' | ' | ' | ' | ' | ' | ' |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0 | ' | 0 | ' | 0 | ' | ' | ' |
Fair Value, Inputs, Level 3 [Member] | Note receivable – Seller of SM Canada [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Assets: | ' | ' | ' | ' | ' | ' | ' | ' |
Notes Receivable, Fair Value Disclosure | 2,440,000 | ' | 2,440,000 | ' | 3,171,000 | ' | ' | ' |
Available-for-sale Securities, Current [Member] | ' | ' | ' | ' | ' | ' | ' | ' |
Unrealized Gain (Loss) on Securities | ' | ' | ' | ' | 59,000 | ' | ' | ' |
Liabilities: | ' | ' | ' | ' | ' | ' | ' | ' |
Available-for-sale Securities, Gross Unrealized Loss | ' | ' | $600 | ' | ' | ' | ' | ' |