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Note 14 - Employee Benefit Plan | 12 Months Ended
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Dec. 31, 2017
Notes to Financial Statements |
Compensation and Employee Benefit Plans [Text Block] | ( 1 4 ) Employee Benefit Plan The Company offers a defined contribution 401 (k) Profit Sharing Plan (the Plan) which covers substantially all employees who meet certai n age and service requirements. The Plan allows employees to make voluntary pre-tax salary deferrals to the Plan. The Company, at its discretion, may elect to make an annual contribution to the Plan equal to a percentage of each participating employee’s salary. Such discretionary contributions must be approved by the Company’s board of directors. Employees are fully vested in the Company contributions after six years of service. In 2017, 2016 and 2015, the Company made total contributions of $686,580, $408,303 and $385,453 to the Plan, respectively.

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- Definition The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -URI http://asc.fasb.org/topic&trid=2197446 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -URI http://asc.fasb.org/topic&trid=2127225 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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