XML 27 R22.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Stock Plans and Non-Qualified Option Agreement (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2014
Stock Plans and Non-Qualified Option Agreement [Abstract] |
Summary of total stock options | The summary of the Company’s total Stock Plans and a Non-Qualified Stock Option Agreement (which was forfeited in second quarter of 2013) as of March 31, 2014, as compared to March 31, 2013, and changes during the periods then ended, are presented below. The Company’s Plans consist of the 1993 Non-Qualified Stock Option Plan (last options expired February 2013), the 2004 and 2010 Stock Option Plans, and the 2003 Outside Directors Stock Plans:
|  |  |  |  |  |  |  | Weighted Average |  |  | Aggregate |
|  |  |  |  | Weighted Average |  |  | Remaining |  |  | Intrinsic |
|  | Shares |  |  | Exercise Price |  |  | Contractual Term |  |  | Value |
Options outstanding January 1, 2014 |  |  | 362,800 |  |  | $ | 9.53 |  |  |  |  |  |  |
Granted |  |  | ─ |  |  |  | ─ |  |  |  |  |  |  |
Exercised |  |  | ─ |  |  |  | ─ |  |  |  |  |  |  | $ | ─ |
Forfeited |  |  | (22,000 | ) |  |  | 8.17 |  |  |  |  |  |  |  |  |
Options outstanding End of Period (2) |  |  | 340,800 |  |  |  | 9.62 |  |  |  | 2.7 |  |  | $ | 47,790 |
Options Exercisable at March 31, 2014(2) |  |  | 334,800 |  |  | $ | 9.73 |  |  |  | 2.6 |  |  | $ | 37,710 |
Options Vested and expected to be vested at March 31, 2014 |  |  | 340,800 |  |  | $ | 9.62 |  |  |  | 2.7 |  |  | $ | 47,790 |
|  |  |  |  |  |  |  | Weighted Average |  |  |  | Aggregate |
|  |  |  |  | Weighted Average |  |  | Remaining |  |  |  | Intrinsic |
|  | Shares |  |  | Exercise Price |  |  | Contractual Term |  |  |  | Value |
Options outstanding January 1, 2013 |  |  | 528,800 |  |  | $ | 9.82 |  |  |  |  |  |  |  |  |
Granted |  | ─ |  |  | ─ |  |  |  |  |  |  |  |  |
Exercised |  | ─ |  |  | ─ |  |  |  |  |  |  | $ | ─ |
Forfeited |  |  | (82,000 | ) |  |  | 10.86 |  |  |  |  |  |  |  |  |
Options outstanding End of Period (1) |  |  | 446,800 |  |  |  | 9.63 |  |  |  | 3.8 |  |  | $ | ─ |
Options Exercisable at March 31, 2013(1) |  |  | 369,300 |  |  | $ | 10.12 |  |  |  | 3.3 |  |  | $ | ─ |
Options Vested and expected to be vested at March 31, 2013 |  |  | 446,800 |  |  | $ | 9.63 |  |  |  | 3.8 |  |  | $ | ─ |
(1) | Options with exercise prices ranging from $5.50 to $14.75
(2) | Options with exercise prices ranging from $2.79 to $14.75

X
- Details
Name: | pesi_StockPlansAndNonQualifiedOptionAgreementAbstract
Namespace Prefix: | pesi_
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