XML 54 R37.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Share-Based Compensation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2015
Variables Used in Black-Scholes Option Pricing Model to Determine Estimated Grant Date Fair Value for Options Granted | The following are the variables we used in the Black-Scholes option pricing model to determine the estimated grant date fair value for options granted under the Plan for each of the years presented:
|  | 2015 |  | 2014 |  | 2013
Expected volatility |  | 34% - 50% |  | 48% - 59% |  | 57% - 61%
Weighted-average volatility |  | 43% |  | 55% |  | 58%
Expected dividends |  | — % |  | — % |  | — %
Expected term (in years) |  | 0.5 - 5.9 |  | 1.1 - 7.8 |  | 5.1 - 7.8
Risk-free rate |  | 0.26% - 1.73% |  | 0.14% - 2.37% |  | 1.33% - 2.32%
Summary of Option Activity | The table below presents a summary of option activity under both of our plans as of December 31, 2015, and changes during the year then ended:
|  | Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Outstanding at January 1, 2015 |  |  | 1,448,684 |  |  | $ | 6.17 |  |  |  |  |  |  |  |  |
Granted |  |  | 514,610 |  |  |  | 6.09 |  |  |  |  |  |  |  |  |
Exercised |  |  | (28,836 | ) |  |  | 5.54 |  |  |  |  |  |  |  |  |
Cancelled or forfeited |  |  | (455,734 | ) |  |  | 6.06 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2015 |  |  | 1,478,724 |  |  | $ | 6.19 |  |  |  | 5.8 |  |  | $ | 622,420 |
Exercisable at December 31, 2015 |  |  | 804,484 |  |  | $ | 5.90 |  |  |  | 3.7 |  |  | $ | 504,629 |

X
- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
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=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration