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Note 14 - Income Taxes - Gross Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | ---
Deferred tax assets |  |  |
Allowance for credit losses | $ 23,738 | $ 21,191 | $ 18,544
Deferred loan fees and costs | 10,728 | 9,724 | 10,337
Deferred rent | 1,483 | 1,364 |
Stock-based compensation | 3,037 | 2,068 | 1,714
Net operating loss | 2,695 | 2,946 | 3,198
Unrealized loss on securities available-for-sale | 1,303 |  |
Unrealized loss on interest rate swap derivatives | 284 |  |
SERP | 2,088 | 1,776 | 1,421
Premises and equipment | 3,838 | 3,381 | 1,590
Other | 477 | 383 | 71
Total deferred tax assets | 49,671 | 42,833 | 36,875
Deferred tax liabilities |  |  |
Unrealized gain on securities available for sale |  | (694) | (1,765)
Excess servicing | (191) | (157) | (114)
Deferred rent |  |  | (162)
Intangible assets | (1,260) | (1,671) | (2,323)
Total deferred tax liabilities | (1,451) | (2,522) | (4,364)
Net deferred income tax amount | $ 48,220 | $ 40,311 | $ 32,511

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- Definition Amount of deferred tax liability attributable to taxable temporary differences. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(15)(b)(2)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)(2)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Liability -URI http://asc.fasb.org/extlink&oid=6510232 Reference 4: 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(26)(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: 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(26)(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
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