XML 26 R15.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Stock-based compensation | 9 Months Ended
--- | ---
Oct. 31, 2017
Stock-based compensation [Abstract] |
Stock-based compensation [Text Block] | Stock-based compensation. The Company has stock-based compensation awards that can be granted to eligible employees, officers or directors.
| Three Months Ended October 31, | Nine Months Ended October 31,
| 2017 |  | 2016 |  | 2017 |  | 2016 |
Stock-based compensation expense |  | $21 |  |  | $55 |  |  | $80 |  |  | $216 |
Restricted stock-based compensation expense |  | $294 |  |  | $151 |  |  | $938 |  |  | $819 |
Stock Options. The fair value of the outstanding option awards was estimated on the grant dates using the Black-Scholes option pricing model.
| Nine Months Ended October 31,
Fair value assumptions | 2017 | 2016
Expected volatility | 43.2% | 43.2%
Risk free interest rate | 1.2% | 1.2%
Dividend yield | 0 | 0
Expected life | 5.0 | 5.0
Option activity | Options | Weighted Average Exercise Price | Weighted Average Remaining Contractual Term | Aggregate Intrinsic Value
Outstanding at January 31, 2017 | 524 |  |  | $11.55 |  | 4.5 |  | $534 |
Exercised | (30 | ) | 6.77 |  |  | 37 |
Expired or forfeited | (125 | ) | 18.75 |  |  |
Outstanding end of period | 369 |  | 9.50 |  | 4.3 | 338 |
Exercisable end of period | 335 |  |  | $9.62 |  | 3.9 |  | $303 |
Unvested option activity | Options | Weighted Average Grant Date Fair Value | Aggregate Intrinsic Value
Outstanding at January 31, 2017 | 74 |  |  | $9.31 |  |  | $69 |
Vested | (32 | ) |  |
Expired or forfeited | (8 | ) | 11.49 |  |
Outstanding end of period | 34 |  |  | $8.32 |  |  | $35 |
As of October 31, 2017, there was $0.1 million of total unrecognized compensation expense related to unvested stock options. The expense is expected to be recognized over a period of 1.8 years. Restricted stock. The following table summarizes restricted stock activity for the year:
Restricted stock activity | Restricted Shares | Weighted Average Grant Price Per Share | Aggregate Intrinsic Value
Outstanding at January 31, 2017 | 290 |  |  | $8.75 |  |  | $2,540 |
Granted | 172 |  | 8.02 |  |
Issued | (55 | ) |  |
Forfeited | (39 | ) | 7.86 |  |
Outstanding end of period | 368 |  |  | $8.35 |  |  | $2,955 |
As of October 31, 2017, there was $1.6 million of unrecognized compensation expense related to unvested restricted stock granted under the plans. The cost is expected to be recognized over the weighted-average period of 2.2 years.

X
- Definition Stock-based compensation [Abstract] + References No definition available. + Details
Name: | ppih_StockBasedCompensationAbstract
Namespace Prefix: | ppih_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration