XML 82 R41.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Stock-Based Compensation Plans (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2012
Stock-Based Compensation Plans [Abstract] |
Summary of changes in outstanding stock options | The following is a summary of the changes in outstanding stock options for the years ended December 31, 2012 and 2011:
|  | Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (Years) |
Outstanding at December 31, 2010 |  |  | 312,024 |  |  | $ | 13.12 |  |  |  | 3.2 |
Expired |  |  | (49,324 | ) |  |  | 15.74 |  |  |  | - |
Exercised |  |  | (201,800 | ) |  |  | 12.70 |  |  |  | - |
Forfeited, other |  |  | (1,500 | ) |  |  | 14.23 |  |  |  | 3.0 |
Outstanding at December 31, 2011 |  |  | 59,400 |  |  |  | 12.35 |  |  |  | 2.9 |
Expired |  |  | (2,000 | ) |  |  | 14.43 |  |  |  | - |
Exercised |  |  | (28,250 | ) |  |  | 12.36 |  |  |  | - |
Forfeited, other |  |  | - |  |  |  | - |  |  |  | - |
Outstanding at December 31, 2012 |  |  | 29,150 |  |  |  | 12.20 |  |  |  | 1.9 |
Options exercisable at December 31, 2012 |  |  | 29,150 |  |  | $ | 12.20 |  |  |  | 1.9 |
Restricted and performance-based share activity | Our restricted and performance-based share activity was as follows for the years ended December 31, 2012 and 2011:
|  | Shares |  |  | Weighted Average Grant Date Fair Value per Share |
Balance at December 31, 2010 |  |  | 364,800 |  |  | $ | 10.41 |
Granted |  |  | 203,950 |  |  |  | 12.04 |
Vested |  |  | (72,575 | ) |  |  | 6.93 |
Forfeited |  |  | (38,125 | ) |  |  | 7.67 |
Balance at December 31, 2011 |  |  | 458,050 |  |  |  | 11.92 |
Granted |  |  | 205,300 |  |  |  | 12.50 |
Vested |  |  | (110,900 | ) |  |  | 14.03 |
Forfeited |  |  | (18,825 | ) |  |  | 11.45 |
Balance at December 31, 2012 |  |  | 533,625 |  |  | $ | 13.03 |

X
- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and performance-based stock that were outstanding at the beginning and end of the year, and the number of restricted stock and performance-based stock that were granted, vested, or forfeited during the year. + References No definition available. + Details
Name: | smp_ScheduleOfShare-BasedCompensationRestrictedStockAndPerformance-BasedStockActivityTableTextBlock
Namespace Prefix: | smp_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration