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Organization and Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2013
OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlockAbstract |
Allowance for Credit Losses on Financing Receivables | The table below sets forth the components of the Allowance for Doubtful Accounts for the years ended December 31.
Year |  | Balance at January 1 |  | Provision charged to expense |  | Write-offs / Recoveries |  | Balance at December 31
2011 |  | $ | 82 |  |  | $ | 510 |  |  | $ | (162 | ) |  | $ | 430 |
2012 |  | $ | 430 |  |  | $ | 246 |  |  | $ | (216 | ) |  | $ | 460 |
2013 |  | $ | 460 |  |  | $ | 1,175 |  |  | $ | (446 | ) |  | $ | 1,189 |
Schedule of Accumulated Other Comprehensive Income (Loss) | The changes in accumulated other comprehensive income (loss) by component were as follows:
|  | December 31,
|  | 2013 |  | 2012
Foreign currency translation |  |  |  |
Balance at beginning of period |  | $ | (420 | ) |  | $ | 345 |
Other comprehensive income (loss): |  |  |  |
Foreign currency translation adjustments (1) |  | 438 |  |  | (765 | )
Balance at end of period |  | $ | 18 |  |  | $ | (420 | )
Available-for-sale marketable securities |  |  |  |
Balance at beginning of period |  | $ | 28 |  |  | $ | 36 |
Other comprehensive income (loss): |  |  |  |
Net unrealized holding gain (loss) (2) |  | (14 | ) |  | (8 | )
Deferred income taxes (2) |  | 5 |  |  | — |
Total other comprehensive income (loss) |  | (9 | ) |  | (8 | )
Balance at end of period |  | $ | 19 |  |  | $ | 28 |
Total accumulated other comprehensive income (loss) |  | $ | 37 |  |  | $ | (392 | )
(1) | In all periods presented, there were no tax impacts related to rate changes and no amounts were reclassified to earnings.
(2) | In all periods presented, there were no realized holding gains or losses and therefore no amounts were reclassified to earnings.
Schedule of Finite-Lived Intangible Assets | The table below shows the amortization period and other intangible asset cost by intangible asset as of December 31, 2013 and 2012, and the accumulated amortization and net intangible asset value in total for all other intangible assets.
|  |  |  | 2013 |  | 2012
Description of Other Intangible |  | Amortization Period |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Customer lists |  | 3-15 years |  | $ | 4,567 |  |  | $ | (2,541 | ) |  | $ | 2,026 |  |  | $ | 4,567 |  |  | $ | (2,186 | ) |  | $ | 2,381 |
Tradenames |  | 8 years |  | 351 |  |  | (219 | ) |  | 132 |  |  | 351 |  |  | (175 | ) |  | 176 |
Patent assets |  | 12-18 years |  | 2,388 |  |  | (822 | ) |  | 1,566 |  |  | 2,083 |  |  | (667 | ) |  | 1,416 |
Covenants not to compete |  | 5-6 years |  | 376 |  |  | (376 | ) |  | — |  |  | 376 |  |  | (313 | ) |  | 63 |
Acquired technologies |  | 7-8 years |  | 1,731 |  |  | (1,150 | ) |  | 581 |  |  | 1,731 |  |  | (929 | ) |  | 802 |
Total |  |  |  | $ | 9,413 |  |  | $ | (5,108 | ) |  | $ | 4,305 |  |  | $ | 9,108 |  |  | $ | (4,270 | ) |  | $ | 4,838 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | The table below shows the estimated future amortization expense for intangible assets:
Year | Estimated Amortization Expense
2014 | $ | 777 |
2015 | 745 |
2016 | 725 |
2017 | 414 |
2018 | 394 |
Thereafter | 1,250 |
Total | $ | 4,305 |
Property, Plant and Equipment | The table below shows the depreciable life and cost by asset class as of December 31, 2013 and 2012, and the accumulated depreciation and net book value in total for all classes of assets.
Description of Property and Equipment |  | Depreciable Life |  | 2013 |  | 2012
Land |  |  |  | $ | 1,440 |  |  | $ | 1,440 |
Building |  | 39 years |  | 4,535 |  |  | 4,535 |
Building and leasehold improvements |  | 3-39 years |  | 4,898 |  |  | 4,480 |
Field equipment |  | 3-4 years |  | 18,006 |  |  | 17,746 |
Computer equipment and software |  | 2-3 years |  | 2,677 |  |  | 3,151 |
Furniture and fixtures |  | 3-10 years |  | 1,512 |  |  | 1,782 |
Vehicles |  | 5 years |  | 36 |  |  | 36 |
Total cost |  |  |  | 33,104 |  |  | 33,170 |
Less accumulated depreciation |  |  |  | (20,077 | ) |  | (19,421 | )
Total net book value |  |  |  | $ | 13,027 |  |  | $ | 13,749 |
Schedule of Earnings Per Share, Basic and Diluted | The table below sets forth the weighted-average shares used at December 31 in calculating earnings (loss) per share:
|  | 2013 |  | 2012 |  | 2011
Basic weighted-average shares |  | 22,286,000 |  |  | 22,709,000 |  |  | 24,095,000 |
Conversion of unsecured loan notes |  | 7,000 |  |  | 7,000 |  |  | 7,000 |
Unexercised options and unvested restricted stock units |  | 286,000 |  |  | 819,000 |  |  | 531,000 |
Diluted weighted-average shares |  | 22,579,000 |  |  | 23,535,000 |  |  | 24,633,000 |

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- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953423-111524 + Details
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- Definition Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph b -Article 5 + Details
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