Note 9 - Commitments and Contingencies (Details) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Operating Leases, Rent Expense	$ 4,200,000us-gaap_LeaseAndRentalExpense	$ 3,500,000us-gaap_LeaseAndRentalExpense
Defined Contribution Plan, Cost Recognized	$ 370,000	$ 228,000

The amount of the cost recognized during the period for defined contribution plans.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration