Note 5 - Stock-Based Compensation

6 Months Ended

Jun. 30, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

5. Stock-Based Compensation

We account for share-based awards in accordance with ASC Topic 718, Compensation – Stock Compensation (“ASC 718”). ASC 718 requires that the cost resulting from all share-based payment transactions be recognized in the financial statements. ASC 718 requires all entities to apply a fair value-based measurement method in accounting for share-based payment transactions with employees except for equity instruments held by employee share ownership plans.

Total compensation expense recognized related to stock-based compensation was $2.8 million and $2.5 million for the three months ended June 30, 2014 and 2013, respectively. For the six months ended June 30, 2014 and 2013, we recognized stock-based compensation expense of $5.2 million and $4.0 million, respectively. As of June 30, 2014, total unrecognized stock-based compensation expense was $16.7 million, with a weighted average period over which the remaining unrecognized compensation expense is expected to be recorded of approximately 1.9 years.