XML 39 R29.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Stock Compensation (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2017
Stock Compensation [Abstract] |
Schedule Of Weighted-Average Assumptions Used To Determine The Fair Value Of Options |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ | Three Months Ended |  | Nine Months Ended
﻿ | September 30, 2017 |  | September 30, 2017
﻿ | Stock Options |  | ESPP Options |  | Stock Options |  | ESPP Options
﻿Expected life of options |  | N/A |  |  | 0.5 Years |  |  | 4.8 Years |  |  | 0.5 Years
﻿Expected stock price volatility |  | N/A |  |  | 0.43 |  |  | 0.40 |  |  | 0.35
﻿Risk-free interest rate |  | N/A |  |  | 1.14% |  |  | 1.87% |  |  | 0.62%
﻿ ﻿ ﻿ ﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ | Three Months Ended |  | Nine Months Ended
﻿ | September 30, 2016 |  | September 30, 2016
﻿ | Stock Options |  | ESPP Options |  | Stock Options |  | ESPP Options
﻿Expected life of options |  | 4.8 Years |  |  | 0.5 Years |  |  | 4.8 Years |  |  | 0.5 Years
﻿Expected stock price volatility |  | 0.40 |  |  | 0.30 |  |  | 0.40 |  |  | 0.30
﻿Risk-free interest rate |  | 1.19% |  |  | 0.49% |  |  | 1.20% |  |  | 0.49%
﻿ ﻿ ﻿
Summary Of Total Stock Compensation Expenses |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ | Three Months Ended |  | Nine Months Ended
﻿ | September 30, |  | September 30,
﻿ | 2017 |  | 2016 |  | 2017 |  | 2016
﻿RSA, PSA, RSU, and PSU expense | $ | 1,448 |  | $ | 1,397 |  | $ | 4,326 |  | $ | 3,616
﻿Stock option and ESPP option expense |  | 519 |  |  | 421 |  |  | 1,614 |  |  | 1,203
﻿Total stock compensation expense | $ | 1,967 |  | $ | 1,818 |  | $ | 5,940 |  | $ | 4,819
﻿

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsByPlanTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration