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Schedule II - Valuation and Qualifying Accounts (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |  |  |  | 12 Months Ended
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Dec. 31, 2013 Accounts receivable - allowance for doubtful accounts [Member] | Dec. 31, 2012 Accounts receivable - allowance for doubtful accounts [Member] | Dec. 31, 2011 Accounts receivable - allowance for doubtful accounts [Member] | Dec. 31, 2013 Inventory-reserve for slow-moving items [Member] | Dec. 31, 2012 Inventory-reserve for slow-moving items [Member] | Dec. 31, 2011 Inventory-reserve for slow-moving items [Member] | Dec. 31, 2013 Notes receivable - allowance for doubtful accounts [Member] | Dec. 31, 2012 Notes receivable - allowance for doubtful accounts [Member] | Dec. 31, 2011 Notes receivable - allowance for doubtful accounts [Member] | Dec. 31, 2010 Notes receivable - allowance for doubtful accounts [Member] | Dec. 31, 2013 Deferred tax assets - valuation allowance [Member] | Dec. 31, 2012 Deferred tax assets - valuation allowance [Member] | Dec. 31, 2011 Deferred tax assets - valuation allowance [Member]
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at Beginning of Year | $ 636 | $ 955 | $ 636 | $ 1,818 | $ 1,767 | $ 1,616 | $ 970 | $ 970 | $ 970 | $ 970 | $ 273 | $ 344 | $ 310
Additions- Charges to (Recovery of) Costs and Expenses | 478 | (214) | 347 | 249 | 181 | 751 |  |  |  |  | 25 |  | 34
Deductions- Write- offs/Costs Incurred | 287 | 105 | 28 | 678 | 130 | 600 |  |  |  |  |  | 71 |
Balance at End of Year | $ 827 | $ 636 | $ 955 | $ 1,389 | $ 1,818 | $ 1,767 | $ 970 | $ 970 | $ 970 | $ 970 | $ 298 | $ 273 | $ 344

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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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- Definition Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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