2.4.0.8008 - Disclosure - Note 3 - Stock-Based Compensationtruefalsefalse1false falsefalsec4_From1Jan2013To30Jun2013http://www.sec.gov/CIK0000071829duration2013-01-01T00:00:002013-06-30T00:00:001true 1nr_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlockAbstractnr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Disclosure of Compensation Related Costs, Share-based Payments [Text Block]2false 2us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00 Note 3 – Stock-Based Compensation During the second quarter of 2013, the Compensation Committee of our Board of Directors approved equity-based compensation to executive officers and other key employees. These awards included a grant of 714,879 shares of time-vesting restricted stock and restricted stock units, which vest equally over a three-year period. Non-employee directors received shares of restricted stock totaling 67,365 shares, which will vest in full on the first anniversary of the grant date. The fair value on the date of grant for both of these awards was $11.43 per share. Additionally, 497,658 stock options were granted to executive officers and other key employees at an exercise price of $11.43, which provides for equal vesting over a three-year period with a term of ten years. The estimated fair value of the stock options on the grant date using the Black-Scholes option-pricing model was $5.42. The assumptions used in the Black-Scholes model included a risk free interest rate of 1.02%, expected life of 5.22 years and expected volatility of 53.7%. The Compensation Committee also approved performance-based awards during the second quarter of 2013 to executive officers. The performance-based restricted stock units will be settled in shares of common stock and will be based on the relative ranking of the Company’s total shareholder return (“TSR”) as compared to the TSR of the Company’s designated peer group for 2013. The performance period began May 3, 2013 and ends June 1, 2016, with the ending TSR price being equal to the average closing price of our shares over the 30-calendar days ending June 1, 2016. A total of 149,532 performance restricted stock units were granted with the payout of shares for each executive ranging from 0%-150% of target. The estimated fair value of each restricted stock unit at the date of grant using the Monte Carlo valuation model was $13.11. The valuation was done as of June 3, 2013, which included a risk free interest rate of 0.52%, the average closing price of our shares over the 30-calendar days ending June 3, 2013 of $11.33 and expected volatility of 53.58%. falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 false0Disclosure of Compensation Related Costs, Share-based Payments [Text Block]falseNote 3 - Stock-Based CompensationUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.newpark.com/role/Note3StockBasedCompensation12